Improvement in machines for forming scale-pans



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I I Z'JZZorneays Y A PATENT OFFICE..

FREDERICK MEYER, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN MACHINES FOR FORMING SCALE-PANS.

Specification forming part of Letters Patent No. 122,045, dated December 19, 1871.

To all whom t may concern:

Beit known that I, FREDERICK MEYER, of the city of Newark, in the county of Essex and State of New Jersey, have invented a new and useful Machine for Making Seamless Scoops for Scales, of which the following is a specification In the accompanying drawing, Figure l is a front elevation of machine for producing sealnless scoops. Fig. 2 is a cross-section in line x a', of Fig. l. Fig. 3 is a similar view, the top or con- Vex roller being removed. Fig. 4 is a plan or top view of the machine, and Fig. 5 is a detached perspective view of the forming-die, located between the rolls.

My invention consists of the combination of a xed forming-die with revolving forming-rolls of a rolling-machine, which die fills up the space between said rollers, leaving only sufficient room for the sheet metal to pass between them and the two concave rollers, and a continuous bed or die for the correspondingly-shaped convex upper roller to move on. The said die and rollers are shaped to correspond to the shape of the scoops of weighing-scales desired tobe produced seamless.

In the accompanying drawing I haveshown the rollers and die shapedso as to produce seamless scoops for ordinary scales. Between the upright A A of a suitable frame, which may be held to each other by cross-rods or bars B, are located rollers C D E, the lower concave roller C and the upper convex rollerll having their bearings in suitable boxes, sliding in vertical slots a a formed in the uprights AA', while the upper concave roller D ,has its bearings in boxes sliding in horizontal slots d in the rear extensions F F' of the uprights A A. The shafts of the rollers C D E carry, on the outside of upright A', cog-wheels Gr, which gear with each other, and thus motion is transmitted to the rollers D G through the operationbil roller E, the shaft of which, outside the upright A, may carry a handcrank, H, or any other suitable means to give it motion. Between the bearing-boxes ot' the rollers O and E are placed springs to allow elastic ity to the rollers, lwhich may be regulated by setscrews f passing through caps g over the slots .a a in the uprights A Al 5 the set-screws h, passing through caps z over the slots d, serve to adjust the roller D. By removing these caps gil the rollers and their bearings may be removed.

In Fig. 5 I have shown a detached view of the die J, which has a concave face, j', which corresponds with the concavity of the rollers D C, and the face j corresponds with the convex surface of roller E. The sides of this die having a certain degree of concavity allow the die to be held suspended between the rollers D C without any other means of support, while at the Sametime these rollers are free to revolve without binding. The face j ofthe die, extending the entire length of the rollers and its edges resting in their concavity, forms with them a continuous concave surface, over which the piece of sheet metal, which has previously received an oval or other appropriate circumference, passes, and against which this piece of sheet metal is pressed into scoopshape by means of the convex roller E. Were the die J not used, the edge of the piece of sheet metal would either pass under the roller D instead of over, and thus no curve in the cross-section of the scoop would be produced, or, in case it did pass over the roller D, that part of the sheet metal passing over the space between the rollers l) and G would be liable to be sunk into said space, and thus disiigure or wrinkle up the scoop. But as by using the die J every particle ofthe piece of sheet metal during its entire passage through the rollers is held between solid surfaces, it is not only impossible for any portion of the scoop to be imperfect, but no hand labor is at all required to finish the scoop after it comes from the rollers. The die J, as well as the rollers (l D E, may be made in sets of different sizes to produce different-sized scoops for scales, and are preferably constructed of steel. The entire machine occupies but very little space, is simple in construction, and easy to manipulate, and

as the die is perfectly loose and only`held suspended between the rollers D O no adjustment or fastening and loosening is required. The blanks for the scoops may be prepared in oval or other suitable shape, in large numbers, by cutting or stamping them out, and thin scoops produced by merely passing these blanks through between the rollers in continuous succession as fast as the rollers can be turned.

Having described my invention, I claim- 1. In combination with revolving forming-rolls of a rolling-machine., axed forming-die, located The above speeioaton of my improved Inaand operating substantially as described. chineformakingseainless sooopsbrsoales,sig1ied 2. A (lie7 J, shape-d to oorrespondto the shape this 27 th day of October7 1871.

of the rollers of a rolling-machine, and located FREDERICK MEYER.l

between the rolls in such a manner as to till the space between the three rolls so as to allow a, Witnesses:

piece of sheet metal to be passed between the `A. E. H. JOHNSON,

rolls, as described. ALEXR. A. C. KLA'UCKE. (136) 

